A post to the
Beyond3D Forums (thanks ASLayerAODsk) follows-up on news that id Software
has made a deal for shadow technology that will be used in DOOM 3
(story). The article offers the site's disapproval of patents in
general and expresses some skepticism about the legitimacy of Creative's claims, but the accompany quote from John Carmack positions this all as a matter of practicality:

The patent situation well and truly sucks.

We were prepared to use a two-pass algorithm that gave equivalent results at a
speed hit, but we negotiated the deal with Creative so that we were able to use
the zfail method without having to actually pay any cash. It was tempting to
take a stand and say that our products were never going to use any advanced
Creative/3dlabs products because of their position on patenting gaming software
algorithms, but that would only have hurt the users.

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